Karnaphuli climate

Name: Karnaphuli
Address: BD

Karnaphuli is warmest in April, with average highs of 33 °C, and coldest in January, when nights average 14 °C. June is the wettest month (388 mm) and January the driest (6.8 mm). Figures are 1991–2020 climate normals.

Across a full year Karnaphuli averages 1,929 mm of rain and 326 days above 25 °C.

Bangladesh · population 203,697 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month April 33 °C
Coldest month January 14 °C
Driest month January 7 mm
Wettest month June 388 mm
Least cloud February 22 % cloud
Hottest on record April 38 °C
Coldest on record January 11 °C

What to expectKarnaphuli through the year

Karnaphuli has a clear annual cycle: average daily highs run from 25 °C in January to 33 °C in April, a swing of 8.4 °C in mean temperature across the year.

Counted across a normal year, 326 days a year reach 25 °C, 156 of them reach 30 °C. The warmest reading in the 1991–2020 record is 38 °C, in April.

Rain is strongly seasonal. June averages 388 mm against 7 mm in January — 57 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	24.7 °C	7 mm	25 %
February	27.6 °C	17 mm	22 %
March	31.2 °C	53 mm	27 %
April	32.6 °C	89 mm	38 %
May	31.8 °C	242 mm	55 %
June	30.1 °C	388 mm	88 %
July	29.3 °C	385 mm	94 %
August	29.7 °C	287 mm	93 %
September	29.9 °C	249 mm	87 %
October	29.6 °C	163 mm	61 %
November	27.8 °C	39 mm	42 %
December	25.3 °C	10 mm	36 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	24.7 °C	14.2 °C	19.2 °C	29.9 °C	10.8 °C	13	0
February	27.6 °C	16.1 °C	21.8 °C	33.0 °C	10.8 °C	25	4
March	31.2 °C	20.1 °C	25.5 °C	37.6 °C	15.5 °C	31	23
April	32.6 °C	23.4 °C	27.5 °C	38.2 °C	17.0 °C	30	26
May	31.8 °C	24.7 °C	27.7 °C	38.1 °C	21.7 °C	31	25
June	30.1 °C	24.9 °C	26.9 °C	35.6 °C	22.8 °C	29	18
July	29.3 °C	24.6 °C	26.4 °C	33.6 °C	22.3 °C	30	13
August	29.7 °C	24.7 °C	26.5 °C	33.9 °C	22.8 °C	31	15
September	29.9 °C	24.5 °C	26.5 °C	34.1 °C	22.5 °C	30	16
October	29.6 °C	23.4 °C	26.0 °C	33.9 °C	18.5 °C	30	14
November	27.8 °C	19.8 °C	23.5 °C	32.0 °C	14.0 °C	29	3
December	25.3 °C	15.9 °C	20.3 °C	30.1 °C	11.3 °C	17	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	7 mm	1	11 h/day	25 %	75 %	7.6 km/h
February	17 mm	2	11 h/day	22 %	69 %	9.1 km/h
March	53 mm	4	12 h/day	27 %	68 %	12 km/h
April	89 mm	9	13 h/day	38 %	76 %	13 km/h
May	242 mm	20	13 h/day	55 %	82 %	13 km/h
June	388 mm	27	14 h/day	88 %	88 %	13 km/h
July	385 mm	29	13 h/day	94 %	89 %	13 km/h
August	287 mm	29	13 h/day	93 %	89 %	12 km/h
September	249 mm	27	12 h/day	87 %	89 %	9.5 km/h
October	163 mm	18	12 h/day	61 %	87 %	7.4 km/h
November	39 mm	4	11 h/day	42 %	83 %	6.5 km/h
December	10 mm	1	11 h/day	36 %	80 %	6.7 km/h

How Karnaphuli compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Karnaphuli	33 °C	14 °C	1,929 mm	326
Hāthazāri · Bangladesh	31 °C	15 °C	2,622 mm	326
Bāndarban · Bangladesh	34 °C	14 °C	2,072 mm	343
Chattogram · Bangladesh	31 °C	15 °C	2,608 mm	316
Aizawl · India	27 °C	5.1 °C	1,761 mm	118
Comilla · Bangladesh	32 °C	12 °C	2,128 mm	333
Cox’s Bāzār · Bangladesh	31 °C	16 °C	2,645 mm	323

Planning a trip? See the best time to visit Karnaphuli.

QuestionsCommon questions about Karnaphuli’s climate

When is the best time to visit Karnaphuli?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, April is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Karnaphuli get?

In April, the warmest month, daily highs average 33 °C. About 156 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average 14 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Karnaphuli?

June, averaging 388 mm over 27 days with rain. The driest month is January with 7 mm. The year as a whole averages 1,929 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Karnaphuli rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 22.691°, 92.235° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.